Answer:
A. Cell membrane, DNA, ribosomes
Explanation:
I'm not so sure, sorry if i'm wrong ):
 
        
             
        
        
        
Answer:
The process of making mRNA from DNA is called transcription, and it occurs in the nucleus. The mRNA directs the synthesis of proteins, which occurs in the cytoplasm. mRNA formed in the nucleus is transported out of the nucleus and into the cytoplasm where it attaches to the ribosomes.
Explanation:
 
        
             
        
        
        
C)because many orginisms can live in the same area.However an ecosytem does not always eat the same the same food
        
                    
             
        
        
        
Answer:
Um, first of all this isn't biology it's geography. 
Explanation:
But I guess I could help. I think that table C needs to be corrected because divergent plate boundaries are known to separate instead of colliding to form new crust but I could be mistaken so you have to double check. If I am correct please make me brainliest